Mold for silo-walls.



A. P. REIGHERT.

MOLD FOR SILO WALLS. APPLIOATION FILED JULY 10,1911.

1,071,177. Patented Aug. 26, 191 3.

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MOLD FOR SILO WALLS.

APYLIOATIOH FILED JULY 10, 1911.

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MOLD FOR SI-LO WALLS.

APPLICATION rum JULY 1o;1911.

1 ,07 1 1 77 Patented Aug. 26, 1913.

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"4 if m I I L-J u: to 50 I E arrow-41 g Ill UNITED STATES PATENT curiou AUGUST F. BEICHEBT, 0F MILWAUKE WISCONSIN, ASSIGNOR TO BEIGHEBT MFG 00., 0F MILWAUKEE, WISCONSIN, A. CORPORATION OF WISCONSIN.

- MG'LD FOR SEQ-WALLS Specification of Letters Patent.

Patented Aug. 26,1913.

Application filed July 10, 1.911. Serial No. 637,757.

To all whom it may concern:

Be it known that I, AUGUST F; Huron-cur, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Wisconsin, have invented new and useful Improvements in Molds for Silo-Walls, of which the following is a specification.

My-invent-ion relates to improvements in molds for concrete walls, with especial reference to that class of molds which are used for the manufacture of silos, cisterns, etc.

The object of this invention is to provide a form of mold comprising a series of like units which may be combined in such a manner as to form a cylindrical wall, said units being so formed as to produce a coin crete wall having a smooth interior surface without shoulders or projections which might interfere with the settling of the contents of the silo.

A further object of my invention is to provide means whereby the units may be employed to produce cylindrical walls in closing cistern or silo spaces of different diameters, and in which the units may be advanced, as the work progresses, by removing the units first placed in position as the concrete hardens behind them and replacing them in an advance position.

While I refer to my inventionas being employed 1.; the construction of silos, cisterns, etc, it will be understood that it is not essential thatthe cylinder be vertical, since it is obvious that it may be extended horizontally in the construction of tunnels, conduits and the like.

In the following description, reference is had to the accompanying drawings, in -which Figure 1' is a plan view of a mold embodying my invention. Fig. 2 is a sectional view showing three interior mold sections as they appear when assembled and forming parts of two courses to be filled with concrete. Figs. 3, 4, 5 and. 6 are detail views of angle iron reinforcing strips employed at the margins of the respective units, and showing the connecting levers. Figs. 7, 8 and -9 are detail views of'the inner end portion of one of the reinforcing radial arms, and the clamping member for connecting it to a supporting standard. Fig. 10 is a detail view of one of the members used to temporarily connect the inner and. outer walls of the mold. Fig. 11 is a detail view of the exterior surface of one of the exterior units. Fig. 12 is a detail view of one of the vertical reinforcing bars, constituting a marginal wall. Fig. 13 is a detail view in vertical section of one side of the mold, showing the units arranged to form a double wall together with the reinforcing apparatus connected with the central standard. Fig. 14 is a front elevation of the door-way frame. Fig. 15 is an inner or face View of one of the door frame members, showing the separable sections for embracing the reinforcing rings. Fig. 16 is a sectional view drawn on line m-m of Fig. 14-.

Like parts are identified by the same reference characters throughout the several views. Y

The inner walls of my improved mold are formed of comparatively thin pieces of sheet metal A, having their upper and lower margins reinforced by said segmentally curved bars B and C respectively, which bars are secured to the metal sheet A by bolts or rivets. The bar C is narrower than the bar B, and is secured to the metal sheet A in a position to leave a marginal ing portion a, as clearly shown in Fig. 2.

A lever B, pivotally secured to the bar B, is provided with a hook 6 adapted to en gage a projecting stud or pin C on the bar C of the superposed unit, whereby said units may be connected together.

Each of the units is reinforced vertically by a set of angle iron bars D, D" and D". The bars D and D" are bolted or riveted to the side margins of the sheet A, with one flange extending outwardly from the inner surface of-said sheet A. Forked levers'd are pivotally connected with the outwardly extending flange of the angle iron member D, and one arm 03 of these forked levers is offset over the angle iron flange in a position to engage the angle iron flange D" of a similar unit, when said units are adjusted with side edges abutting. The projecting flanges of the angle iron member D are also provided with pins 11, which project laterally and are adapted to be received in holes ,te'riaL I a'm enabled to bend each unit to a greater or less degree by applying pressure the mold is composed of units substantially p which slots the mar 'ns. of the units are pressed into a true circular shapeby a set I of radial arms formed in adjustable sections fare notched and adapted to engage one flange of the angle iron segments F.

Iatthemeetingedges of these bars through respectively. The bars J and J at the respective sides of'the door way are mutually "drical Walls of different sizes, it is necessary that'their' curvature be changed, and

' scribed, with the exception that the vertical rein-forcing angle iron bars D are omitted,"

trated inFig. 1.; A central post E -is embyclamp'ing members I, which are formed embedded in the concrete which is filled in M? which are adapted to lap togetherand formed in the projecting flange D" of an adjacent unit. 1

I preferably do not use angle ironmembers at the top and bottom or the reason that in using these mold units for cylin by using flat bars B and C of flexible mathereto at the center. The outer wall of the same in construction as those above deas appears in Fig. 11. p The several units are assembled asill'us-.

ployed, around which theunits are arranged to form a double wall F and G, the unitscoinposing the outer wall being supported from the inner wall by T iron connecting members H, having slots h in one flange, in

adapted to be receive The walls are rein.- forced from the central post E, and are also in half sections adapted to'embrace the post and vare bolted to the inner sections E of. the radial arms','as best shown in Figs. 7, 8 and 9. .The outer sections E of these arms The-door frame is composed of a set of two upright bars J and J connected by a latch 7', which is pivoted to-the bar J and provided with a notch adapted to receive a pin 7" on the bar J. Holes K are formed which reinforcing rings L, (Fig. 1) are passed, ywhich .reinforclng rings are to be between the inner and outer walls F and G supported from each other by braces M and to be connected with each other by levers m, similar. to the levers d. i

Thelevers d, fand-m are similar in construction and mode of operation to those shownand described in my former Patent Number 805819, dated November 28,1905,

and therefore need not, be described with greater -,pa rticularity The mold units are alsosomewhat similarin form, but the marginal rei if fgrcinglbars at tlie'top and hottom vof each unit in the construction herein described, is flexible whereas in my former pate 't, the top and bottom bars are formed of angle iron and are rigid. In assembling the 'units to form a silo o cistern wall,.the units of the outer and inner wall are placed in abutting side contact with each other in the-respectivewalls, to form two rings of a generally circular form around the central post E, .the segmental 'bars F being adjusted in position and supported from the units which form the interior wall of the mold, by brackets Q, (Fig. 2) mounted upon the bars D of the interior wall units.- The radial-arms are then interposed between the ring segments F and the connecting members I on the central post,

said radial arm sections being properly adjusted in correspondence with the diameter of the ring. The outer-wall is loosely supported from the inner wall at the top margins of said walls by the connecting members H. The ring formed by the segments F determines the interior diameter of the structure. p

When the concrete is filled in, thevinner wall is pressed against these rings, a plurality of which are employed as shown in Fig. 13. The rings being circular, it is obvious that the interior wall of the mold will be supported in a true circle, and the outer wall being spaced from the inner wall by the temporary connecting members H, will necessarlly also assume a circular form. When been adjusted and the spaces bet-ween them substantially filled witheoncrete, the second row or tier 'of units is adjusted in position on top of the first units, the units of the second tier being connected together and reinforced by radial segments and radial arms the first rows of inner and outer units have from the central post in the same manner as the first row of units, the hooked levers B being'employed to connect the superposed units with each other in a position with the margins a of'the upper units abutting the top margins of the sheets composing the lower units and lapping the projecting portions of the bars B on said lower units.

While I have described these bars B and the bars G as being curved, it is not essential that they should be curved when originally applied to the sheet metal pieces A, in view of the fact that said bars are flexible. I prefer, however, to use curved bars adapted to form a medium sized cistern or silowithout additional fiexion. When so formed, it

will not be necessary to bend them very far from their normal form to'increase or decrease the diameter of the circle occupied by the mold wall.

v the reinforcing ring.

I claimv v- 1. A cistern or silo mold, comprising in- ;ner and outer walls, each formed of a series ofeurved umts, means for connectlng'sald units 1n each wall of the mold at their re movable radial arms formedof angle iron,

having one flange engaged in said slots, and having notches in their-outer ends receiving 2. A cistern or silo mold, comprising inner and outer Walls, each formed of a series 'of curved units, means for connecting said units in each yvall of the mold at their .respective margins, supporting members secured to the interior wall units, a reinforcing ring composed of segments mounted upon said supporting members, a central post, clamping membersengaging the post and provided with outwardly extending flanges having radial slots therein, and re movable radial arms formed of angle iron,

certain of them having one flange engaged in said slots, and having notches in their outer ends receiving the reinforcing ring, and another of said arms being ermanently secured to each clamping mem r and removable with it; said radial arms being,

formed in adjustable sections;

In testimony whereof I afiix my signature in the presence of two witnesses.

I AUGUST r. REICHERT.

Witnesses:

Lnvnnm'r G. W'HEELER, I. D. BREMERE. 

